When setting up lighting equipment, there are several factors to consider, including critical angle, viewing angle, and whether the equipment is above or below the water surface. When installing the device, determine the lighting device projection direction so that the light source is not seen directly or indirectly due to reflection and refraction. Gas-filled bodies of water should be lit from below, and smooth bodies of water should be lit from the front. It is necessary to ensure that the lighting effect of the fountain is visible from all directions. When individual jets are used to create vertical upward compositions, use a minimum of two fixtures. When more jets are used to produce water droplets, at least one lamp is required under each jet.
